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In-vehicle network system

a technology of in-vehicle network and vehicle, which is applied in the direction of data switching network, process and machine control, instruments, etc., can solve the problems of inconvenient in-vehicle network and process that is not suitable for high-speed processing

Active Publication Date: 2020-08-11
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present disclosure provides an in-vehicle network system that can quickly process high-priority data without adding a unique data format or unique data. The system can also identify the last reception data and determine if it is the target of high-speed processing. This allows for more efficient and effective processing of important data in vehicles.

Problems solved by technology

The unique process corresponding to the unique format (data format) is not suitable for high-speed processing since a processing time becomes long.
Therefore, the process is not suitable for an in-vehicle network in which there is data having a high priority on which high-speed processing is to be preferentially performed.

Method used

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embodiment

[0035]FIG. 1 is a diagram illustrating an in-vehicle network system 100 of the embodiment. The in-vehicle network system 100 processes data having a high priority at high speed. Here, the data having a high priority is, for example, data having a relatively long data length and is data that needs real-time processing. Needing real-time processing means needing performance of high-speed processing and transfer real-time data. Accordingly, the data having a high priority is typically data indicating an image of surroundings of a vehicle.

[0036]The in-vehicle network system 100 includes a central gateway (CGW)-electronic control unit (ECU) 110, buses 120A, 120B, an autonomous driving ECU 130A, and an image recognition ECU 130B. The autonomous driving ECU 130A and the image recognition ECU 130B are connected to the CGW-ECU 110 via the buses 120A, 120B, respectively. Here, one of the autonomous driving ECU 130A and the image recognition ECU 130B is an example of a first control unit, and ...

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PUM

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Abstract

An in-vehicle network system includes a first control unit, a second control unit, and a network connecting the first control unit to the second control unit. The first control unit performs a process of transmitting data, which is target of high-speed processing, having a first data length obtained by dividing transmission data by the first data length or obtained by adding predetermined data to the transmission data as high-speed processing. The second control unit performs a process of receiving reception data at a first processing speed that is a low speed when the second control unit determines that a data length of the reception data is not the first data length, and performs a process of receiving the reception data at a second processing speed higher than the first processing speed when the second control unit determines that the data length of the reception data is the first data length.

Description

INCORPORATION BY REFERENCE[0001]The disclosure of Japanese Patent Application No. 2016-252021 filed on Dec. 26, 2016 including the specification, drawings and abstract is incorporated herein by reference in its entirety.BACKGROUND1. Technical Field[0002]The present disclosure relates to an in-vehicle network system.2. Description of Related Art[0003]In the related art, there is a data packet processing device including a plurality of nodes having two processors (first and second processors) mounted thereon. When there is data to be transmitted in real time, a transmission node generates a template packet and notifies a reception node of the template packet storing data to be processed at high speed prior to start of communication, such that the template packet is shared between the transmission node and the reception node.[0004]When the reception node receives the template packet, the reception node performs a process with the second processor. Accordingly, a processing load of the ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04L29/08H04L12/40H04L29/12H04L29/06G05D1/00
CPCH04L67/12H04L12/40136H04L61/2007H04L2012/40273G05D1/0088H04L61/6022H04L69/22H04L2101/622H04L61/5007
Inventor KAKIYA, YOSHINORI
Owner TOYOTA JIDOSHA KK